Question 703232
.80X+.24*30=.70(30+X)
.80X+7.2=21+.70X
.80X-.70X=21-7.2
.10X=13.8
X=13.8/.10
X=138 GAL OF 80% SOLUTION IS USED.
PROOF:
.80*138+.24*30=.70(30+138)
110.4+7.2=.70*168
117.6=117.6